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Edmonton Oilers defenseman Jeff Petry (2) celebrates with center Lennart Petrell, of Finland, after his goal during the first period of an NHL hockey game against the Chicago Blackhawks, Monday, Feb. 25, 2013, in Chicago. (AP Photo/Charles Rex Arbogast)

Edmonton Oilers defenseman Jeff Petry (2) celebrates with center Lennart Petrell, of Finland, after his goal during the first period of an NHL hockey game against the Chicago Blackhawks, Monday, Feb. 25, 2013, in Chicago. (AP Photo/Charles Rex Arbogast)